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公开(公告)号：EP0518616B1
公开(公告)日：1997-04-16
申请号：EP92305278.1
申请日：1992-06-09
申请人： SONY CORPORATION
CPC分类号： H04N7/1696
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公开(公告)号：EP0067562B1
公开(公告)日：1985-01-09
申请号：EP82302650.5
申请日：1982-05-24
申请人： SONY CORPORATION
发明人： Saito, Isao
IPC分类号： G11B5/58
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公开(公告)号：EP0067562A1
公开(公告)日：1982-12-22
申请号：EP82302650.5
申请日：1982-05-24
申请人： SONY CORPORATION
发明人： Saito, Isao
IPC分类号： G11B5/58
摘要： A magnetic reproducing apparatus comprises two rotary magnetic heads (6a, 6b) mounted on respective bimorphs (7a, 7b), the heads (6a, 6b) being displaceable in the transverse direction relative to recorded tracks (11 a, 11 b) on a magnetic tape (10) is reponse to control voltages applied to the respective bimorphs (7a, 7b) to effect correct scanning of the tracks (11a, 11b), a pulse generator (48) for generating a first pulse signal of frequency dependent on the transport speed of the tape (10), a first counter (47) for counting the pulses of the first pulse signal to produce a first count output each time a head (6a, 6b) completes scanning of a track (11a, 11b), a second counter (68) which, starting from the first count output, count the pulses of a second pulse signal which has a frequency which is an integral multiple of the frequency of the first pulse signal and produces a second count output, and a circuit (70, 71 a, 71 b) to derive from the second count output control voltages for supply to the bimorphs (7a, 7b) to preset the positions of the heads (6a, 6b) relative to the tracks (11a, 11b) each time a head (6a, 6b) is to start scanning a track (11a, 11b). The apparatus further comprises a third counter (80) for counting the pulses of the first pulse signal to produce a respective third count output corresponding to each scan of a track (11a, 11b) by a head (6a, 6b), a subtractor (83) to derive a difference output from each third count output and the immediately preceding third count output, and an adder (84) to add the difference output to the second count output prior to supply to the circuit (70, 71a, 71b) for deriving the control voltage, whereby the control voltages and modified in dependence on acceleration or deceleration of the transport speed of the tape (10).
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公开(公告)号：EP0518616A2
公开(公告)日：1992-12-16
申请号：EP92305278.1
申请日：1992-06-09
申请人： SONY CORPORATION
CPC分类号： H04N7/1696
摘要： The video signal processing circuit in accordance with the present invention comprises an anti-piracy signal generating circuit for generating anti-piracy signal components to a video signal reproduced by a first video unit, the signal components being interleaved to a frequency f H in the band of the video signal in accordance with the video signal components and a signal superimposing circuit for superimposing the anti-piracy signal components intermittenly to the luminance signal, first color difference signal, and second color difference signal.
摘要翻译： 根据本发明的视频信号处理电路包括一个反盗版信号发生电路，用于将产生反盗版信号分量产生到由第一视频单元再现的视频信号上，该信号分量被交织到频带fH 根据视频信号分量的视频信号和用于将反盗版信号分量间隔叠加到亮度信号，第一色差信号和第二色差信号的信号叠加电路。
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公开(公告)号：EP0066996A1
公开(公告)日：1982-12-15
申请号：EP82302627.3
申请日：1982-05-21
申请人： SONY CORPORATION
发明人： Saito, Isao
CPC分类号： G11B5/592
摘要： A tracking control device for a video tape recorder comprises a bimorph leaf (5) on which a rotary playback head (2) is mounted so as to be deflectable in a direction perpendicular to tracks (1a) to be scanned. A triangular wave signal generating circuit (11) comprising cascaded flip-flops (17 to 20) generates a substantially triangular wave signal which is supplied to the bimorph leaf (5) to cause the playback head (2) to wobble relative to the tracks (1a). A detecting circuit (6) detects an envelope signal in the signal reproduced by the playback head (2), and a phase comparing circuit (13) which includes an exclusive-OR circuit (35) compares the phase of this envelope signal with the phase of the triangular wave signal. The output of the phase comparing circuit (13) is fed back to the bimorph leaf (5) to effect tracking correction.
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公开(公告)号：EP0518616A3
公开(公告)日：1993-05-19
申请号：EP92305278.1
申请日：1992-06-09
申请人： SONY CORPORATION
CPC分类号： H04N7/1696
摘要： The video signal processing circuit in accordance with the present invention comprises an anti-piracy signal generating circuit for generating anti-piracy signal components to a video signal reproduced by a first video unit, the signal components being interleaved to a frequency f H in the band of the video signal in accordance with the video signal components and a signal superimposing circuit for superimposing the anti-piracy signal components intermittenly to the luminance signal, first color difference signal, and second color difference signal.
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公开(公告)号：EP0066996B1
公开(公告)日：1985-08-21
申请号：EP82302627.3
申请日：1982-05-21
申请人： SONY CORPORATION
发明人： Saito, Isao
CPC分类号： G11B5/592
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